Boiler.



Y Patented F eb. l3, i900.

E. J. SABIN.

BUlLER.

(Application filed May 15, 1899.)

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BOILER.

(Application filed May 15, 1899.)

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ATTORNEYJ.

THi Noams PETERS w, PHOTO-LYI'HOWWLSHINGTON, n. c

No. 643,207. Patnted Feb. I3, 1900. E. .1. SABIN.

r BOILER.

[Application filed May 15, 1899.) (No Model.) 3 Sheets-Shem 3.

WITNESSES 7 2 INVENTOH I m ?M//% 55/22 THE Noflms PETERS an, mmauwo WASHINGTON, u a.

litre Frames ATENT Fries.

EGBERT J. SABIN, OF COLUSA, CALIFORNIA.

BOILER.

SPECIFICATION forming part of Letters Patent No. 643,207, dated February 13, 1900.

Application filed May 15, 1899,

To rtZZ whom it may concern:

Be it known that I, EGBERT J. SABIN, a citizen of the United States, residing at Colusa, in the county of Oolusa and State of California, have invented certain new and useful Improvements in Boilers, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to steam-boilers; and the object thereof is to provide a boiler with the various features of advantage fully herein described and pointed out in the claims.

The invention is fully disclosed in the following specification, of which the accom panying drawings form a part, in which like letters and numerals of reference denote like parts in the several views, and in which- Figure 1 is a side elevation of a steam-boiler constructed according to my invention; Fig. 2, a vertical section thereof, the upper portion being shown in full lines; Fig. 3, a transverse section on the line 3 3 of Fig. 2; Fig. 4, atransverse section on the line 4 4c of Fig. 2, and Fig. 5 a transverse section on the line 5 5 of Fig. 2.

Referring more particularly to the drawings, my improved boiler is provided with a casing comprising three parts a, b, and c, of which a is the boiler-casing proper, b a fluechamber casing, and c a flue-casing. Within the forward part of the casing a, which is of greater lateral extent than the flue-casing c and at the right side thereof, as shown in the drawings, are arranged a water-bottom d and a Water-back bridge-wall 6, connected and communicating therewith. The water-bottom surrounds the ash-pit, and above the latter are arranged the grate-bars, one of which, g, is shown in Fig. 2. A door-plate his secured to the front of the casing a and provided, respectively, below and above the grate-bars g with an ash-door and fire-door, respectively,

j and 7t and adapted to close doorways Z and m in the door-plate h.

Extending about the interior wall of the casing a, rearwardly of the water-back bridgewall 6 and communicating therewith, is a Water-back n, and the casing 04 is provided with a plurality of boiler-tubes, of which there are two sets 0 and p, the former and shorter of which are arranged above the grate g in the forward part of the casing c and the latter 7 Serial No. 716,815. (No model.)

The pipes o communicate with the flue-' chamber (1 at their upper ends and with the fire-pit r at their lower ends.

The pipes 19 communicate at their lower ends with the fire-pit r rearward of the waterback bridge-wall e and at their upper ends with the fine in the casing 0.

Intermediate of the tubes 0 and p the boilerspaces 8 are all in communication with the water-back n, and the water-back n is in communication with the water-back bridge-wall e and water-bottom d, as described.

The casingais provided with the usual mud ring or drum, (shown in section at 2., Fig. 2, and in communication with the water-back bridge-wall e and water-bottom (1,) and the mud may be removed from the water-bottom din the usual manner.

A segmental damper u (shown in section in Figs. 2 and 3) normally surrounds the side of the casing a within the flue-chamber q and is suspended by means of a bracket 4), secured to each side end portion thereof, and said bracket is connected pivotally with the links w, (shown in Fig. 2,) which are pivotally connected with a yoke-shaped support 8, which is connected with a lever as (shown in Fig. 2) and which is pivotally supported by an upright 3 secured to the casing b and the lower end of which projects outwardly and is provided with a pivoted and plurally-perforated bar a. The links w pass through the upper portion of the casing b. The lever a: is likewise perforated, as at 6, to register with the perforations in the bar .e' and may be adjusted along the bar by means of a pin, which may pass through said registering perforations.

The casings a, b, and c are riveted together by bolts 7 and similar bolts and stay-bolts 7 pass through the water-bottom d,water-back bridge-wall c,water-back n, and boiler-spaces s and walls thereof and firmly bind the whole structure together.

The operation of my improved boiler will be evident from the foregoing description taken in connection with the accompanying a e iao'i drawings and the following statement thereof: The fuel is placed upon the grate-bars g through the doorway m and the boiler is filled with water in the usual manner, but preferably to an altitude considerably lower than the top of the tubes 19. Air may be admitted beneath the grate through the doorway Z, and the heat, smoke, and fumes will, with the damper in the position shown in Fig. 2, pass upwardly through all the tubes 0 and 19 into the flue-chamber q and flue within the casing c. The water-bottom d, water-back bridgewall 6, Water-back n, and boiler-spaces s will all be subjected to heat, and a rapid econ0m ical steam production will ensue.

If it is desired to concentrate all the ascending heated air and vapors and smoke upon the water in the boiler-spaces surrounding the tubes p, the lever 02 is adjusted to shut off communication between the flue-chambers g and the flue in the casing 0. Thus the amount of boiler-surface to be heated may be regulated by the damper u.

If the boiler be charged as described, the tubes p will pass through the boiler-spaces 3 above the upper level of the water in the spaces 8 surrounding the same and the steam will be superheated and dried.

Having fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The herein-described boiler, comprising a casing provided with a fire-pit, and a flue, two sets of boiler-tubes mounted therein, and communicating with said fire pit and arranged to communicate with said flue, and

means for entirely cutting off the communication of one of said sets of tubes with said flue, substantially as shown and described.

2 The herein-described boiler, comprising a casing provided with a fire-pit and flue, two sets of boiler-tubes mounted therein and communicatin g with said pit and arranged to communicate with said flue, and an adjustable damper by means of which the communication of, one of said sets of boiler-tubes with said flue may be determined and regulated, substantially as shown and described.

3. A boiler, comprising a casing provided with a fire-pit and a flue, two sets of, boilertubes mounted therein, one of which is shorter than and arranged laterally of the other, said sets of boiler-tubes both communicating with said fire-pit, and the higher set of said boilertubes communicating directly with said flue, a supplemental flue-chamber with which the shorter set of boiler-tubes communicate directly, said supplemental flue-chamber being arranged to communicate with said flue, and means for regulating and determining the communication of said supplemental fluechambcr with said flue,substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 8th day of May, 1899.

EGBERT J. SABIN.

Witnesses:

WALTER G. READ, FRANK WOLFF. 

